Radio packet modem adapter accessory for portable computing devices



FIG. 1 is a top, front and right side perspective view of a radio packet modem adapter accessory for portable computing devices showing our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a radio packet modem adapter accessory for portable computing devices, as shown and described. 